Ext.onReady(function() {
	//定义数据
	var myData = [
		['Apple',29.89,0.24,0.81,'9/1 12:00am'],
		['Ext',83.81,0.28,0.34,'9/12 12:00am'],
		['Google',71.72,0.02,0.03,'10/1 12:00am'],
		['Microsoft',52.55,0.01,0.02,'7/4 12:00am'],
		['Yahoo!',29.01,0.42,1.47,'5/22 12:00am']
	];
 	
 	//定义Grid的列标题
	var myReader = new Ext.data.ArrayReader({}, [
		{name: 'company'},
		{name: 'price', type: 'float'},
		{name: 'change', type: 'float'},
		{name: 'pctChange', type: 'float'},
		{name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
	]);
 
	//生成Grid
	var grid = new Ext.grid.GridPanel({
		store: new Ext.data.Store({
			data: myData,
			reader: myReader
		}),
		columns: [
			{header: "Company", width: 120, sortable: true, dataIndex: 'company'},
			{header: "Price", width: 90, sortable: true, dataIndex: 'price'},
			{header: "Change", width: 90, sortable: true, dataIndex: 'change'},
			{header: "% Change", width: 90, sortable: true, dataIndex: 'pctChange'},
			{header: "Last Updated", width: 120, sortable: true, 
				renderer: Ext.util.Format.dateRenderer('m/d/Y'), 
	                        dataIndex: 'lastChange'}
		],
		viewConfig: {
			forceFit: true
		},
		renderTo: 'content',//指定放置这个Grid的元素（本例用一个id为content的div实现）
		title: 'My First Grid',
		width: 500,
		frame: true
	});
 
	grid.getSelectionModel().selectFirstRow();
});